While I’ve had some experience setting up a business - there are lots of people out there with more experience so I’d suggest trying them out to see if what they offer is what you want.

For therapists there is: https://www.nacre.com.au/

 For Occupational Therapists and therapy assistants there is https://theotmentor.com/  

Or more general mentoring that may work out cheaper: https://www.sbms.org.au/

If you want to meet other business owners, there is https://herbusiness.com/

 If you are in Victoria I’d also recommend joining business Victoria and also have a look at Business Australia https://business.vic.gov.au/ - they have a business month in August which has lots of freebies and cheap things so worth looking at. Also https://business.gov.au/

 You also get great stuff about the NDIS from here: https://teamdsc.com.au/about including being an unregistered provider: https://teamdsc.com.au/workshops/how-to-become-an-unregistered-ndis-provider

 Also I think it is worth paying for a good accountant...here’s some tips for choosing one: https://www.xero.com/au/guides/how-to-choose-accountant/

And as well as looking after your business, you need to look after you - so I’d suggest a investing in a Financial Planner - at least for one year - to help you sought out your long-term financial goals into retirement. Here are some hints for how to choose someone: https://www.truwealthadvice.com.au/how-to-choose